baber/WOPTO huggingface dataset:
Patent DE-2837338-A1 (DE)
Title: Photoconductor with core of varying refractive index - keeps dispersion constant for all waves of wave composition for minimal propagation time dispersion
Inventor: PETERMANN KLAUS DR ING
IPC: G02B6/028
Filed: 1978-08-26
Abstract: A photo conductor consists of a core of varying refractive inx. surrounded by a covering layer. It has minimal propagation time dispersion between the separate modes. The refractive index at a stipulated position on the core is determined by a given formula concerning the group index at this position, the dispersion constant of a wave composition, the propagation factor of the open space and the cross-sectional surface of the photo conductor. All waves of a wave composition have roughly the same dispersion constant. According to the laws of statistics all waves appear at the same degree of probability as long as the difference in damping along the coupling lengths are kept small.
Patent DE-2906564-A1 (DE)
Title: Blood sampling instrument - has a holder with an open trough for hose and also securing needle
Inventor: SARSTEDT WALTER
IPC: A61B5/15
Filed: 1979-02-21
Abstract: The blood-sampling instrument comprises an insertion needle with a flexible hose connected to its rear end, also means for pinching off the hose as desired. A holder (1) incorporates an open through (2) for insertion of the end of the hose (3) connected to the needle (4) and also for securing the latter. It also contains a device for pinching off the hose in the transverse direction. There can also be a coupling piece between needle and hose, fitting in a pocket provided at one end of the trough.
Patent DE-2907856-A1 (DE)
Title: Maximum value storage circuit - uses switched capacitor charging and has additional comparator controlled switch for diode characteristic compensation
Inventor: SCHAALE JOERG DIPL ING
IPC: G01R19/04
Filed: 1979-02-28
Abstract: The circuit is for storing the maximum value of an electrical voltage applied at its input has capacitor connected in parallel with a switch and has a comparator with inputs connected to one side of the capacitor and a circuit input. It is designed to ensure that operational amplifier and diode characteristics do not degrade the accuracy of the relationship between the stored and actual maximum values. The diode is conventionally connected between the capacitor and the output of the comparator which contains the operational amflifier. The capacitor (3) terminal (6) connected to the comparator (9) input (10) is also connected to the circuit input (1) via an extra switch (7) operated by a controller (19) and by the comparator output (11) via a potential divider circuit (12, 13) and tapping resistor (15).
Patent DE-2908233-A1 (DE)
Title: Ejector pump for water boreholes - has all stages of ejection constructed within single casing common to all stages
Inventor: HOELTER HEINZ ING GRAD
IPC: F04F5/26
Filed: 1979-03-02
Abstract: An inner tube concentric within an outer casing (5) forms an inlet for water at one end. The inlet tube ends with an annular gap (2) between it and a plate across the space between it and the outer case. Air is blown into the space and turns through this gap to eject water from the inlet. The misture continues in a mixing tube (4) concentric with the inlet and through a short diffuser (3) to a further similar ejector stage (2) constructed in an identical manner within the same casing. All the necessary stages are constructed in an identical manner within the same outer casing.
Patent DE-2913345-A1 (DE)
Title: Analog=to=digital converter - has conversion error code selector contg. delay unit and connected to outputs of comparator and synchronising pulse generator
Inventor: STACHOV ALEKSEI PETROVITSCH
IPC: H03M1/00
Filed: 1979-04-03
Abstract: The analog to digital converter connected to a comparator has a device to select the conversion error code with its control input connected to the output of synchronising pulse generator. Its data input is connected to the output of the comparator. This selection device includes a dealy unit connected to a logic AND gate with its output connected to the unit signal input of a flip-flop. This is followed by a second AND gate connected to a gate switch which is also connected at its output to a register which stores the conversion error code. The delay unit input forms the data input of the selection device. The multiple position output of the register is also the output of conversion error code.
Patent DE-2921870-A1 (DE)
Title: Shoe cleaning device for car occupants - has rod with lateral prong and scraper edges
Inventor: KAUFEL KARL-HEINZ DR MED
IPC: B60R3/04
Filed: 1979-05-30
Abstract: The shoe cleaning scraper tool is intended for removing mud and the like from the shoes before entering a motor vehicle. It comprises a rod with lateral prong provided with scraper edges. The tool may be combined with a conventional window cleaning and/or ice removing tool and it may be collapsible.
Patent DE-2930202-A1 (DE)
Title: Electronic control circuit for electrical domestic appliance - converts analogue control value into digital code for microprocessor
Inventor: KOCH JOSEF DIPL ING
IPC: H03M1/00
Filed: 1979-07-25
Abstract: The circuit uses a microprocessor (4) incorporating a clock generator, a counter (1) and an a-d converter for an input analogne value. This clock generator (8) also indexes an external counter (2) coupled to a weighted resistance network (9) supplied by a constant reference voltage (10) and providing a stepped voltage ramp for comparison with an analogne voltage supplied from a sample and-hold circuit (13). When the ramp voltage is equal to or exceeds the input voltage the comparator (12) provides a status signal which resets a flip-flop (6) and blocks a gate (7) for the clock pulses. The dual counters (1,2) hold indentical counts corresponding to the converted analogne value (14) for use by the microprocessor (4) with both counters subsequently reset.
Patent DE-2951336-A1 (DE)
Title: Carrier for unrolling alternate paper supply rolls - has parallel swivel frames with roll end supports on extendable telescopic beam ends
Inventor: DEUTSCHLE ROBERT
IPC: B65H16/02
Filed: 1979-12-20
Abstract: The mechanism is intended for unrolling paper from alternate supply rolls (9). It comprises a main frame (1) carrying a swivel frame (2) consisting of two axially spaced parallel beams (4,4a) swivelable on a central shaft (3). The rolls are rotatably held (7) between corresponding ends (6,6a) of the beams. Each end (6,6a) with roll support (7) is movable in longitudinal direction of the respective beam by a lift mechanism contained therein which may comprise a motor-driven screw spindle engaging a nut connected to the telescopic end (6,6a). The nut may be fixed in the end via springs. The roll support (7) may be provided with a roll drive and brake mechanism.
Patent DE-3003988-A1 (DE)
Title: Transportable hollow concrete unit serving as shelter - has ceiling casting apertures opening into mould formed by wall pair
Inventor: HAEUSSLER WILHELM DIPL ING DIP
IPC: E04H6/08
Filed: 1980-02-04
Abstract: Shelter unit partitioning wall has a door, to separate off on entry air-lock and another pair of walls separate off a filter chamber with emergency exit. The walls are incorporated in a unit built like a prefabricated garage with thin light concrete walls and is used as personnel shelter. The parallel walls in the pair form a mould for subsequently cast concrete. Ceiling and/or sidewall tops contain mould openings, opening out between these. The unit contains all necessary equipment, such as benches, couches, filters, air intake and outlet, the whole providing a pressure-resistant concrete shell which is ready-made and transportable.
Patent DE-3004136-A1 (DE)
Title: Control network for inverter supplied via intermediate DC circuit - has DC=DC converter feeding integrator and multivibrator for timing
Inventor: BEINHOLD GEORG ING GRAD
IPC: H02M1/08
Filed: 1980-02-02
Abstract: A control circuit is for the thyristors of an inverter supplied via a d.c. voltage intermediate network. It generates the control pulses for the thyristors to effect control in such a way that no current flows when the voltage of the intermediate circuit is low. Each phase contains two thyristors and two free-wheeling diodes in a bridge. Each parallel branch of the bridge contains a commutating choke with a centre tap supplying the load. There is a d.c.-d.c. converter producing an output proportional to the voltage of the intermediate network. It feeds an integrator which determines the integration time. The integrator feeds a multivibrator which determines the timing for the thyristors.
Patent DE-3013646-A1 (DE)
Title: Rotary valve for wind instrument - has ports arranged to minimise changes in air flow direction, and connects additional loop
Inventor: SCHMID ENGELBERT
IPC: G10D9/04
Filed: 1980-04-09
Abstract: The rotary valve is intended for a wind instrument, e.g. French horn, to connect additional tube lengths which lower the pitch of the blown note. It has an inlet (11) which is connected to the outlet (14) either directly, or via a tube loop connected to two further valve ports (12,13). These two ports are not arranged in the direction of the rotational centre of the valve, as is common practice, but their directions pass by the centre so that the change of air flow direction at each port is 2 x 15 to 25 deg. instead of the usual 2 x 45 deg.
Patent DE-3014112-A1 (DE)
Title: Mirror unit for opticians fitting rooms - is angled to allow close-up side views esp. suitable for short-sighted people
Inventor: SPOHR ERICH
IPC: A47G1/04
Filed: 1980-04-12
Abstract: The arrangement has two mirrors (1,2) which abut or adjoin each other and form an acute angle wherein the reflective surfaces (4) face the inner angled area. The viewer can now get a good side view without having to turn his head relative to the mirror. The mirror is of special importance to people choosing spectacles who are short-sighted and would hitherto not be able to see the side view if standing further away as with hairdressers mirrors. The angle between the mirrors is pref. between 40 and 76 deg. If two further sectors are required between the two sectors which make up the side view to form a front view the angle is pref. 51.4 deg.
Patent DE-3016216-A1 (DE)
Title: Oxidn. hair-dye compsn. - contg. ethyl-4-amino-3-methyl-phenyl-amino-ethyl-methyl sulphonamide as developer and standard coupler
Inventor: MAAK NORBERT DIPL CHEM DR
Filed: 1980-04-26
Abstract: Oxidn. hair-dye compsns., contg. standard coupler components and additives, contain N-(2-(N-ethyl-N- (4-amino-3-methyl-phenyl) -amino)-ethyl)-methyl sulphonamide having formula (I) as developer component, opt. present as an inorganic or organic salt. Strong, fast red via brown and violet to blue-black shades are obtd. (I) are water-soluble, stable on storage and non-toxic and do not irritate the skin. (I) is commercially available as its sulphate having formula (I). 1.5H2SO4.H2O and was hitherto used as a photo-developer. The oxidn. hair-dye compsns. can also contain standard developer components and opt. standard, direct dyes. Developer-coupler combination content is 0.2-5 (1-3) wt.%, w.r.t. total hair-dye compsn. The hair-dye compsns. can be applied in a weakly acid to alkaline medium, esp. at pH 8-10, at 15-40 deg.C.
Patent DE-3018042-A1 (DE)
Title: System which attaches label to drawing - simultaneously separates label from other labels, using magnetic or electrostatic forces
Inventor: LAUERER FRIEDRICH DIPL ING
IPC: B65C9/36
Filed: 1980-05-10
Abstract: The connection system fixes an object (2) (e.g. a text) on a substrate (1) (e.g. a drawing) to a two-part object (3,4) (e.g. labels or tags) whilst at the same time separating the two-part object into its components. The objects (1-4) or parts of them are magnetically and/or electrostatically attracted or repelled. Magnetic material may be embedded in the objects. As the two-part object approaches its substrate it is attracted more strongly to that substrate whilst at the same time the repulsion between its parts increases until they separate. The advantage lies in the cheapness with which labels or tags can be affixed to documents.
Patent DE-3024172-A1 (DE)
Title: Cathode for electrolysis of fused aluminium - assembled from under conductive and lower insulating element
Inventor: KUGLER TIBOR DIPL ING
IPC: C25C3/08
Filed: 1980-06-27
Abstract: A cathode for the electrolysis of aluminium in the fused stage is assembled from two rigidly connected elements with a high resistance to thermal shocks. An upper part penetrates from the fused electrolyte into the segregated aluminium and is made of a chemically stable material with a good electrical conductivity and wettability of aluminium. The lower part remains exclusively in the liq. aluminium and is made of insulating material with a good stability in presence of liq. aluminium. The elements of the cathode can be replaced individually and can be mfd. and shaped at lower cost.
Patent DE-3024775-A1 (DE)
Title: Storage holder for any sized coat hangers - has numerous sets of holes to take support rods in any position
Inventor: SEIBICKE WOLFGANG
IPC: A47G29/00
Filed: 1980-06-30
Abstract: The holder comprises a base plinth which is hollow. The upper face of this hollow body has sets of holes (3), comprising several holes into which the rods can be loosely inserted. Each set of holes comprises pairs of holes set parallel to each other. The holes of each pair have a different spacing. This allows widely different-shaped coat hangers to be held firm by placing the rods for the hangers in the required holes. A support face having the same sets of holes as the upper face can be fixed in the hollow body parallel to the upper face, ensuring the inserted rods are held firm.
Patent DE-3028392-A1 (DE)
Title: Switching matrix control for loudspeakers - transmits signal over delays to switching matrix controlling number of loudspeakers
Inventor: STEFFEN FRANK DIPL ING
IPC: H04R27/00
Filed: 1980-07-26
Abstract: A switching matrix allows an audio signal to be distributed with controlled time delays to a number of loudspeakers around an auditorium. The system allows improved signal reproduction generally throughout the auditorium. Loudspeakers (1-8) are arranged in groups around the room (I) and receive signals from a source (I) that are processed over a number of time delay stages (11). The delayed signals are fed to the rows of a switching matrix that has the columns connected to the loudspeakers. Switching points within the matrix are made to provide the optimum reproduction. The matrix setting may be made flexible by coupling with a keyboard facility.
Patent DE-3028539-A1 (DE)
Title: Vehicle seat with infinite rake adjustment - has sprung interacting friction cones with cam release
Inventor: BUDDE ULRICH
IPC: B60N2/225
Filed: 1980-07-28
Abstract: The friction cones (9,10) are held together by a pack of cup springs (18) in a recess in the friction support block (11). The outer end of the support shaft (14) for the inner cone (9) is fitted with a thrust plate (15) which is pressed by a cam (23) eccentric on a control shaft linked to the release lever (24). The inner friction cone is part of the seal back hinge mounting while the friction block is secured to the seat mounting. A spiral spring (25) about the seat back pivot provides the spring force to faise the seat back. The user releases the friction hold and presses the seat back into the required setting. Few moving components are used and an infinite adjustment is obtained.
Patent DE-3029331-A1 (DE)
Title: Tubular fabric mangle with airjet spreader - overfeeds fabric into spreader to counteract length extension
Inventor: RUCKH GERHARD DIPL ING
IPC: D06B15/02
Filed: 1980-08-01
Abstract: In the mangling of tubular fabric, whereby the wet fabric passes vertically upwards to the mangling rollers through an air-jet spreader, the fabric is fed to the spreader at a speed which is greater than the speed of the mangle, to relieve the weight of the wet fabric. The feed mechanism comprises a set of rollers or aprons with a high-friction surface covering which are driven at a speed which is continuously variable. This arrangement prevents distortion caused by the wt. of the wet fabric inducing considerable length extension.
Patent DE-3030363-A1 (DE)
Title: Single phase variable speed motor - driving ventilator fan or centrifugal pump has variable part of auxiliary winding in series with main winding
Inventor: ALISAFA OGLY GJULMAMEDOV SAFE
IPC: H02K17/08
Filed: 1980-08-11
Abstract: The motor with a capacitive coupling has main and auxiliary windings (1,2) connected in series. The auxiliary winding (2) is divided into several sections (9...11) each with a tap-off connection (12...15) cooperating with a switching device (20) with a movable contact (21) for controlling the motor rotation by adjusting the number of sections (9...11) of the auxiliary winding (2) in series with the main winding (1). Pref. the main winding (1) and the auxiliary winding (2) are spaced 90 degrees apart with the capacitor (3) connected between them shifting the current phases in the windings by 90 degrees elec., to obtain perpendicular magnetic fluxes, together providing a rotary magnetic field. The motor is used to drive an axial or centrifugal fan, or to drive a centrifugal pump.
Patent DE-3039768-A1 (DE)
Inventor: FAHLBUSCH HEINZ DIPL ING DR IN
IPC: B62D35/02
Filed: 1980-10-22
Abstract: 1. A suspended cover-hood for additions to vehicles, such as tool boxes, pipe lines, ventilating systems, gear and chassis parts etc., on the underside of rail vehicles, characterised in that at least one self-supporting aerodynamically favourably shaped base trough (10) is provided at the upper edges (10a) of its two sides with guide rollers (11) and/or supporting mechanisms (12) as well as locking mechanisms (13), with which a swingably- mounted apron (14) or a running tunnel (18) with running or sliding rails (15) is associated.
Patent DE-3045069-A1 (DE)
Title: Washing machine accessory support - comprises bracket with hooked end passed through apertures in wall or frame
Inventor: HEISSMEIER WALTER DIPL PHYS
IPC: F16M1/00
Filed: 1980-11-29
Abstract: The support is for accessories such as motors, pumps, fans etc. in washing, drying and similar domestic machines. It comprises a bracket (1) for the accessory, with a hooked portion (3,6) at one end. This is inserted through a first aperture (4) in the machine frame or wall (2) as far as a stop (7) formed on the bracket, after which the end (3) of the hooked portion is passed back through the wall again via a second aperture (5), the stop bearing against the edge (8) of the first one. The main part (6) of the hooked portion, which is at right angles to the bracket, bears against the rear side of the wall between the apertures, while its end (3) is prevented from working free, typically by bending a lug over.
Patent DE-3045397-A1 (DE)
Title: Motor end bearing plate with protection lead socket - compresses inserted end fitting attached to protection lead
Inventor: HAVERKAMP HANS
IPC: H02K5/22
Filed: 1980-12-02
Abstract: The end bearing plate has the end fitting (4) attached to the protection lead fitted into a socket (3) at one side of the end bearing plate. This socket (3) is contoured so that it deforms a spring section of the inserted end fitting (4) to retain this in position. Pref. the socket (3) is formed as a pocket into which the end fitting (4) is inserted from the side or the front with a slit along its sidewall on the opposite side to the end bearing plate for access to the end fitting (4) for allowing its removal. The end bearing plate and incorporated socket can be mass produced.
Patent DE-3106035-A1 (DE)
Title: Pedal gear for a bicycle
Inventor: FEHL HANS HEINRICH
IPC: B62M3/06
Filed: 1981-02-19
Abstract: In conventional bicycle pedal gears, the useful force is the product of the pedalling force and the angular position of the pedal crank with respect to the vertical, and therefore at the upper dead centre (0) and in the horizontal position of the pedal crank is equal to the applied force of the foot. This useful force is increased in the region between the pedal crank positions of 0 and 90 DEG  in accordance with the invention in that the pedals (5, 6) are connected securely, or so as to be movable to a limited extent, to a rigid pedal arm (8) and in that the pedal arm (8) is suspended in each case in an oscillating fashion at the free end of the associated pedal crank (3, 4). <IMAGE>
Patent DE-3106284-A1 (DE)
Title: Carburettor
Inventor: WEITKAMP GUNTHER ING GRAD
IPC: F02M1/14
Filed: 1981-02-20
Abstract: Carburettor for internal combustion engines, the starting device of which contains a throttling orifice in the air inlet, which orifice can be opened by two pneumatic control elements as a function of the intake pressure of the internal combustion engine and of the venturi pressure in the carburettor and as a function of temperature.
Patent DE-3107867-A1 (DE)
Title: Circuit arrangement for controlling the rotation speed of a three-phase motor
IPC: H02P27/02
Filed: 1981-03-02
Abstract: The invention relates to a circuit arrangement for controlling the rotation speed of a three-phase motor. In this case, in contrast to known circuit arrangements of this type, only two of three supply leads to the motor windings each contain a control rectifier arrangement, so that the circuitry cost is considerably reduced, particularly in the case of motors which can be operated in a plurality of stages. <IMAGE>
Patent DE-3111666-A1 (DE)
Title: Ring and process and device for producing the same
Inventor: KLIMMER ERNST
IPC: F01N13/18
Filed: 1981-03-25
Abstract: The invention relates to a ring (2), in particular a flange ring for pipe connections, having a centrally arranged hole (5) which, in the region of one edge, has a calibration (7) which engages radially over said edge, approximately in the form of a ball surface or the like. Said ring can be produced in a simple and cost-effective manner in that it is designed as a punched blank with a stamped-on calibration (7). <IMAGE>
Patent DE-3114355-A1 (DE)
Title: Optical arrangement for measuring the vibrations of an object having a reflecting surface
Inventor: DANDLIKER RENE PROF DR
IPC: G01H9/00
Filed: 1981-04-09
Abstract: The invention relates to an optical arrangement for measuring vibration amplitudes of an object. Two (or three) measuring beams (f1, f2, f3) are directed onto a point P of the object. The beam f'3 resulting from the interference (or instances of interference) and modulated by the vibration is intercepted by the detector (8). One or two components of the vibration in the tangential plane are determined from this. In addition, the beam f1 is directed onto the object at a point P and, after diffusion, combined with the reference beam fr in order to realise an instance of interference. This combined signal f'r is detected by the detector (10). The component of the vibration in the direction of the normal is determined from this. <IMAGE>